Exhaust-and-supply car-ventilator.



No; '644,|0l. Patentd Feb. 27,1900.

L. SCHNEIDER, SR.

- EXHAUST AND SUPPLY CAR VENTILATORQ (Application filed Jan. 6, 1899.) (No Model.)

2 Sheets-She et l No. 644,1Ul. Patented Feb. 27, I900. L. SCHNEIDER, SR. EXHAUST AND SUPPLY GAR VENTILATOR.

WITNESSES spider-frames A in the casing A and carrying at the end screw-wheels M M The elliptical hole (Z in the oblique partition D. should match closely to this shaft without touching When the device stands in the position shown in Fig. 1, the motion of the car in the direction vofv the large arrow will induct a strong current of air at the front end, which, after acting on the screw-wheelM', and thus rapidly turning thelight-running shaft M, is thrown idly outward through the opening a*. Thefonl air from the interior of the car can escape freely throu h the aperture a into the casing A and is vallowed to flow rearward through the half of the cylinder D which is in the rear of the oblique partition D. It can then'ce flow away past the screw-wheel M, where itbecoines subject to the action of the latter. There is a gentle tendency to such motiondueto the form and arrangement of this exhaust-passage. The rapidly-revolving screw-wheel M acting screw-wise, quickens the movement of the current of air so escaping-that is to say, the inertia of the outer air struck by the front screw-wheel M induces a rapid rotation of the shaft M, and consequently of the rear screw-wheel M and this latter acting on the otherwise languidlymoving foul air coming from the interior of of the ear greatly quickens its movement rearward, so as to draw from the interior of sai car with force. 4

\Yhenitis desired to soften the action of this-ventilat0r,.the operator by acting on the car.

handle H turns the shaft H andthrough the pulleys II II and cords G G partially rotates the internal cylinder D, and thereby changes the relation of the inclined partition Dr. This turning may be carried to such an extent as to completely reverse the position of this partition, in which case air is inducted into the I esteem the capacity for such -'use an important part of my device; but it is only required on rare occasions; It allows the rapid driving out of inferior air and'the replacing it with pure. Ordinarily the internal cylinder and its oblique partition will not be turnedso far, but will be adjusted so asto exhaust in varying degrees in cold weather with much less than its full force. I

It will'be observed that both ends are alike.

The apparatus serves in the same mannerin traveling in either direction. It simply re- ,quires reversing by properly turning the handle II when the motionof the car is reversed attaching such to the internal cylinder D to insure its turning as the handleH is turned. The other lugs, J a J serve as stops by striking corresponding stops A A, provided at the required points in the interior of the louter casing A to determine accurately and easily when the inner cylinder has been turned. to the full e'xteut'in one.direction or the other.

Thus when the turning hasbeen continued;

in the directionto exhaust withjfull force and the stop J, carried on the revolving inner cylinder D, strikes the fixed stop A than-- resting of the motion is distinc'tlyfelt by the operator and his effortis discontinued; When it is turned tothe full extent in the opposite direction, the stop J flstrikes the stop A with a corresponding effect. Thus the j udgment of the operator is required only when the ven-. tilator is to be set in an intermediate condi tion, closed orpartly closed. This plate J, with its several lugs, is easily remo'ved'and altered or exchanged when'it becomes expedient to take up moderate'slack' in the cords G G or to make any other change in the l elation of these parts. B is a packingof felt on. the casingA', and

B is also a. packing. of felt secured to the iu- 7 ner face of the removable .cap or semicylinder A These packings are adapted to match with approximate tightness to the inner cylinder D to prevent any material leakage of air from the'fiont side, the strong-pressure side of the partition 1)., to the rear side, the

weaker-pressure side, that which conducts away the foul air from the interior of the car.

Modifications may be made without departa ing from the principle or sacrificing the adf vantages ofthe invention. The horizontall tube; D3, 1 brazed or otherwise fitted to the aperture shown in the elliptical position, may be omitted. When applied, it should be set with just the right degree of obliquity, so f also the wire screen or partial shield A covering the lateral aperture a may be omitted. The employment of the felt packing B B insures suflicient friction to allow the retention of the part and its attachmentin any position in which they may be left without requiring any special fastenings.

' I attach importaneeto the broad portions of the internal cylinder'D, which remain between the long and deep apertures d d, be cause they not only connect the completelycylindrical ends and firmly support the thin partition D at each edge along its whole length, but also because they partially close the apertures a a and further reduce the ef- The ends feet of the device to varying extents as the Q internal cylinder is partially revolved. I also attach importance to the fact that my apparatus is adjusted by hand, because it avoids the temporary displacing which is experienced with automatic apparatus when the train stops with the wind from the rear, and I further attach importance to thewire cords or analogous flexible connections mounted in the manner shown for eitecting the reversal,

because they are strong and reliable and hold the parts firmly without rattling or noise of any kind.

I claim as my invention- 1. In a ventilator, the combination with a Wall having an elongated horizontal opening, a support on said wall contiguous to said opening, an obliquely-located plate revoluble around a horizontal axis andsustained by said support, and means for revolving said plate to reverse its oblique position with respect to said opening, to simultaneously move the ends, the one toward and the other away from the adjacent end of the opening, substantially as herein specified.

2. In a ventilator, the combination with a Wall having an elongated horizontal opening, a support on said wall contiguous to said opening, a longitudinal shaft loosely mounted in I and means for revolving said plate around a horizontal axis to reverse its oblique positionsaid support, and carrying screw-wheels and an obliquely-located reversible plate sustained by said support, and through which said shaft passes, and independently revolves,

with respect to said opening to simultaneously move the ends, the one toward and the other away from the adjacent end of the opening, substantially as herein specified.

3. Inaventilatorforrailroad-cars andanalogous carriages, the open-ended horizontal casing A, having the side apertures a, communicating with the interior of the car, in

. combination with the reversible partition D,

extending longitudinally Within'such casing and held with a fixed amount of obliquity with respect to the horizontal axis of the casin g but with capacity to be partially revolved around said axis, to simultaneouslymove its ends, the one toward and the other away from" the adjacent end of the aperture a to vary its effect, substantially as herein specified.

4. In a ventilator for railroad-cars and analogous carriages, the open-ended horizontal casing A having the side aperture a, communicating with the interior of the car, in comhination with the cylinderD supported within the casing and having the longitudinally-extending partition D, the latter having capacity for being partially revolved around its horizontal axis, so as to allow said partition.

to beset inany required position and be held in such position by friction, as herein specified.

5. In a ventilator for railroad-cars and analogous carriages, the open-ended horizontal casing A having the side aperture a, communicating with the interior of the'car, in combination with the cylinder D supported within such casing, and having the partition D, extending longitudinally within the latter, said cylinder. having capacity for being partially revolved, and the cords G, G and connected shaft H, with its pulleys H, H and operating means H all arranged'for joint operation, substantially as herein specified.

6. In aventilator for railroad-cars and analogous'carriages, the open-ended horizontalcasing A, having the side aperture a, communicating with the interior of the car, and the opposite aperture a, communicating laterall y with the open air, in combination with the internal cylinder supported within such casing-and having the partition D, extend- 7 ing longitudinally within such casing, said cylinder having capacity for being partially revolved, and with the shaft M mounted in the bearings A revolving in a close-fitting opening 01 in such partition, and the screwwheels M, M all arranged for joint opera tion substantially as herein specified.

7. In a car-ventilator the cylindrical casing A, extending longitudinally and having open ends and apertured sides a, a divided longitudinally into easily-separable parts A, A

a wire-cloth covering for each end and also for the lateral aperture a apartially-revoluble interior casin g comprising the longitudi nal cylinder D, havingapertures 01, d, and oblique partition D, revoluble with said cylinder, an easily-revoluble shaft M, and screw-wheels M, M ,'arranged to'promote'the escape of the foul air, and means as the wheels II H and connections for reversing, adjusting, and holding the cylinder D and its obcords pass and in a recess in each of which the other ends are secured by a screw fitting the shaft, substantially as set forth. 1

9. In a ventilator i'or railway-cars and analogous carriages, the car-wall having an opening and a suitable bearing contiguous there: to, revoluble plate D supported in said bearing, located obliquely injuxtaposition to the opening a plate J turning with the plate B and having ears adapted to contact with fixed portions to limit the turning movement of the plate, in combination with operating means comprising cords engaged at one end to the ears of the plate J, and a vertical opersting-shaft carryingpulleys around which said cords pass and to which their other ends are fastened, substantially as set forth. 10. In a'ca'r-ventilator having a cylinder D,

with means for partially revolving within a casing A and carrying a partition D oblique In testimony that I claim the invention to the axis of said cylinder, stops 5*, J car-. above set forth I affix my signature in pres ried on the cylinder and arranged to contact once of two witnesses. p with the stops AflA, on the casing to de- LOUIS SCHNEIDER, SENIOR. termine the extreme positions to which the \Vitnesses: 1 i

cylinder may be turned, all arranged to serve F. H. MCCORMICK,

substantially as herein specified. EMMA HARRIS. 

